Permanent magnet synchronous water pump capable of reducing exhaust noise

Abstract

The permanent magnet synchronous water pump capable of reducing the exhaust noise comprises a pump body and a pump cover, the pump cover is arranged at one end of the pump body, the outer surface of the pump cover is communicated with a water inlet pipe and a water outlet pipe, an installation base is fixedly installed on the outer surface of the pump body, and the end, away from the pump cover, of the pump body is communicated with an air outlet pipe. The outer surface of the air outlet pipe is sleeved with a connecting pipe, and the outer surface of the connecting pipe is sleeved with an extension pipe. According to the permanent magnet synchronous water pump, the pump body, the pump cover, the water inlet pipe, the water outlet pipe, the mounting base, the air outlet pipe, the connecting pipe, the extension pipe, the limiting block, the clamping ring, the positioning ring, the silencing cotton sleeve, the threaded sleeve and other parts are arranged and matched, so that the function of reducing the exhaust noise of the permanent magnet synchronous water pump is achieved, and the connecting pipe, the extension pipe and the silencing cotton sleeve are arranged on the air outlet pipe of the permanent magnet synchronous water pump; the exhaust noise generated in the operation process of the permanent magnet synchronous water pump is reduced, so that the practicability of the permanent magnet synchronous water pump is improved.

Description

Technical Field

[0001] This utility model relates to the field of water pump technology, and in particular to a permanent magnet synchronous water pump that reduces exhaust noise. Background Technology

[0002] A permanent magnet synchronous water pump is a centrifugal drainage pump consisting of a rotor, impeller, connecting shaft sleeve, pump body, pump cover, bearing and stator coil. It is widely used in household appliances such as washing machines and dishwashers. The permanent magnet synchronous water pump drives the water flow by the rapid rotation of the impeller. The water rotating driven by the impeller is discharged from the outlet pipe under the action of centrifugal force. The central part of the impeller forms a vacuum area, which draws water into the inlet pipe. This process continues continuously.

[0003] In the existing technology, when a permanent magnet synchronous water pump is used, it is necessary to purge the air inside the pump. However, the existing permanent magnet synchronous water pumps do not have a sound-dampening structure, which causes the permanent magnet synchronous water pump to generate a lot of noise during the drainage process, thereby reducing the practicality of the permanent magnet synchronous water pump. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a permanent magnet synchronous water pump that reduces exhaust noise.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a permanent magnet synchronous water pump for reducing exhaust noise, comprising a pump body and a pump cover, wherein the pump cover is disposed at one end of the pump body, and an inlet pipe and an outlet pipe are connected to the outer surface of the pump cover; an mounting base is fixedly installed on the outer surface of the pump body; an outlet pipe is connected to the end of the pump body away from the pump cover; a connecting pipe is sleeved on the outer surface of the outlet pipe; an extension pipe is sleeved on the outer surface of the connecting pipe; a limit block is fixedly installed on the inner wall of the extension pipe near the end of the connecting pipe; a positioning ring is fixedly installed on the outer surface of one end of the extension pipe; a sound-absorbing cotton sleeve is sleeved on the outer surface of the extension pipe; a threaded sleeve is threadedly connected to the outer surface of the other end of the extension pipe; and an installation assembly is provided at the end of the pump body near the pump cover.

[0006] As a further description of the above technical solution:

[0007] The outer surface of the vent pipe and the inner wall of the connecting pipe are respectively provided with meshing threaded grooves, and the connecting pipe is threadedly connected to the outer surface of the vent pipe through the threaded grooves.

[0008] As a further description of the above technical solution:

[0009] The outer surface of the connecting tube is provided with a limiting groove that slides with the limiting block. Several retaining rings are fixedly installed on the outer surface of the connecting tube. The inner wall of the extension tube is provided with a retaining groove that is the same number as and matches the retaining rings. The retaining rings are made of rubber.

[0010] As a further description of the above technical solution:

[0011] A connecting ring is fixedly installed at one end of the pump body near the pump cover. A connecting groove is opened on the inner wall of the pump cover. A slider is fixedly installed on the inner wall of the connecting groove. A mounting bolt is threaded onto the outer surface of the pump cover. A sealing ring that is in contact with the pump body is fixedly installed at one end of the pump cover near the pump body.

[0012] As a further description of the above technical solution:

[0013] The connecting ring is slidably connected to the inner wall of the connecting groove. The outer surface of the connecting ring is provided with a sliding groove that matches the slider. The mounting bolt passes through the outer surface of the pump cover and extends into the interior of the pump cover. The mounting bolt is inserted into the arc-shaped outer wall of the connecting ring.

[0014] As a further description of the above technical solution:

[0015] The mounting assembly includes a rotating shaft and a mounting sleeve. The rotating shaft is rotatably connected to the end of the pump body near the pump cover. The mounting sleeve is fitted onto the outer surface of the rotating shaft away from the pump body. Several blades are fixedly mounted on the outer surface of the mounting sleeve. A positioning block is fixedly mounted on the outer surface of the rotating shaft. A fixing plate is fixedly mounted on the end of the mounting sleeve near the rotating shaft. Fixing bolts are threaded onto the side wall of the fixing plate. The blades are located inside the pump cover.

[0016] As a further description of the above technical solution:

[0017] The inner wall of the mounting sleeve is provided with a positioning groove that matches the positioning block. The fixing bolt passes through the side wall of the fixing plate and is inserted into the outer surface of the rotating shaft.

[0018] This utility model has the following beneficial effects:

[0019] 1. Compared with existing technologies, this permanent magnet synchronous water pump with reduced exhaust noise achieves the function of reducing exhaust noise by setting up components such as pump body, pump cover, inlet pipe, outlet pipe, mounting base, vent pipe, connecting pipe, extension pipe, limit block, retaining ring, positioning ring, sound-absorbing cotton sleeve, threaded sleeve, connecting ring, connecting groove, slider and mounting bolts. By setting the connecting pipe, extension pipe and sound-absorbing cotton sleeve on the vent pipe of the permanent magnet synchronous water pump, the exhaust noise emitted by the permanent magnet synchronous water pump during operation is reduced, thereby improving the practicality of the permanent magnet synchronous water pump.

[0020] 2. Compared with existing technologies, this permanent magnet synchronous water pump with reduced exhaust noise achieves convenient and quick impeller replacement through the coordination of components such as a rotating shaft, mounting sleeve, impeller, positioning block, fixing plate, and fixing bolts. It improves the impeller fixing method in existing technologies, allowing for quick disassembly and assembly when the impeller is damaged, thus making impeller replacement more convenient and enhancing the convenience of the permanent magnet synchronous water pump. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of a permanent magnet synchronous water pump for reducing exhaust noise proposed in this utility model.

[0022] Figure 2 This is a schematic diagram of the pump cover structure of a permanent magnet synchronous water pump for reducing exhaust noise, as proposed in this utility model.

[0023] Figure 3 This is a schematic diagram of the connecting pipe structure of a permanent magnet synchronous water pump that reduces exhaust noise, as proposed in this utility model.

[0024] Figure 4 This is a schematic diagram of the extension pipe structure of a permanent magnet synchronous water pump for reducing exhaust noise, as proposed in this utility model.

[0025] Figure 5 This is a schematic diagram of the installation assembly structure of a permanent magnet synchronous water pump for reducing exhaust noise, as proposed in this utility model.

[0026] Figure 6 This is a schematic diagram of the mounting sleeve structure of a permanent magnet synchronous water pump for reducing exhaust noise, as proposed in this utility model.

[0027] Legend:

[0028] 1. Pump body; 2. Pump cover; 3. Inlet pipe; 4. Outlet pipe; 5. Mounting base; 6. Air outlet pipe; 7. Connecting pipe; 8. Extension pipe; 9. Limiting block; 10. Snap ring; 11. Positioning ring; 12. Noise-absorbing cotton sleeve; 13. Threaded sleeve; 14. Connecting ring; 15. Connecting groove; 16. Slider; 17. Mounting bolt; 18. Rotating shaft; 19. Mounting sleeve; 20. Impeller; 21. Positioning block; 22. Fixing plate; 23. Fixing bolt. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Reference Figures 1 to 6 This utility model provides a permanent magnet synchronous water pump for reducing exhaust noise: it includes a pump body 1 and a pump cover 2. The pump cover 2 is located at one end of the pump body 1. The outer surface of the pump cover 2 is connected to an inlet pipe 3 and an outlet pipe 4. A mounting base 5 is fixedly installed on the outer surface of the pump body 1. An air outlet pipe 6 is connected to the end of the pump body 1 away from the pump cover 2. A connecting pipe 7 is sleeved on the outer surface of the air outlet pipe 6. The outer surface of the air outlet pipe 6 and the inner wall of the connecting pipe 7 are respectively provided with meshing threaded grooves. The connecting pipe 7 is threadedly connected to the outer surface of the air outlet pipe 6 through the threaded grooves. The extension tube 8 is fitted with a sleeve. A limiting block 9 is fixedly installed on the inner wall of the extension tube 8 near the end of the connecting tube 7. A limiting groove that slides with the limiting block 9 is opened on the outer surface of the connecting tube 7. Several retaining rings 10 are fixedly installed on the outer surface of the connecting tube 7. The inner wall of the extension tube 8 has a retaining groove that is the same number as and matches the retaining rings 10. The retaining rings 10 are made of rubber. A positioning ring 11 is fixedly installed on the outer surface of one end of the extension tube 8. A sound-absorbing cotton sleeve 12 is fitted on the outer surface of the extension tube 8. A threaded sleeve 13 is threadedly connected to the outer surface of the other end of the extension tube 8.

[0031] To facilitate the installation and removal of the pump cover 2, a connecting ring 14 is fixedly installed at one end of the pump body 1 near the pump cover 2. A connecting groove 15 is provided on the inner wall of the pump cover 2. A slider 16 is fixedly installed on the inner wall of the connecting groove 15. The connecting ring 14 is slidably connected to the inner wall of the connecting groove 15. A sliding groove that matches the slider 16 is provided on the outer surface of the connecting ring 14. A mounting bolt 17 is threadedly connected to the outer surface of the pump cover 2. The mounting bolt 17 passes through the outer surface of the pump cover 2 and extends into the interior of the pump cover 2. The mounting bolt 17 is inserted into the arc-shaped outer wall of the connecting ring 14. A sealing ring that is in contact with the pump body 1 is fixedly installed at one end of the pump cover 2 near the pump body 1.

[0032] By setting up a pump body 1, pump cover 2, inlet pipe 3, outlet pipe 4, mounting base 5, vent pipe 6, connecting pipe 7, extension pipe 8, limit block 9, retaining ring 10, positioning ring 11, sound-absorbing cotton sleeve 12, threaded sleeve 13, connecting ring 14, connecting groove 15, slider 16, and mounting bolt 17, the exhaust noise of the permanent magnet synchronous water pump is reduced. By setting the connecting pipe 7, extension pipe 8, and sound-absorbing cotton sleeve 12 on the vent pipe 6 of the permanent magnet synchronous water pump, the exhaust noise emitted by the permanent magnet synchronous water pump during operation is reduced, thereby improving the practicality of the permanent magnet synchronous water pump.

[0033] An installation assembly is provided at one end of the pump body 1 near the pump cover 2. The installation assembly includes a rotating shaft 18 and an installation sleeve 19. The rotating shaft 18 is rotatably connected to the end of the pump body 1 near the pump cover 2. The installation sleeve 19 is fitted onto the outer surface of the end of the rotating shaft 18 away from the pump body 1. Several blades 20 are fixedly installed on the outer surface of the installation sleeve 19. A positioning block 21 is fixedly installed on the outer surface of the rotating shaft 18. A positioning groove adapted to the positioning block 21 is opened on the inner wall of the installation sleeve 19. A fixing plate 22 is fixedly installed at one end of the installation sleeve 19 near the rotating shaft 18. A fixing bolt 23 is threadedly connected to the side wall of the fixing plate 22. The fixing bolt 23 penetrates the side wall of the fixing plate 22 and is inserted into the outer surface of the rotating shaft 18. The blades 20 are located inside the pump cover 2.

[0034] By setting up a rotating shaft 18, mounting sleeve 19, impeller 20, positioning block 21, fixing plate 22 and fixing bolt 23, the impeller can be replaced quickly and easily. This improves the impeller fixing method in the existing technology, so that when the impeller is damaged, it can be quickly disassembled and assembled, making the replacement of the impeller more convenient and improving the convenience of the permanent magnet synchronous water pump.

[0035] Working Principle: Before using the permanent magnet synchronous water pump, assemble the pump. First, bring the pump cover 2 close to the pump body 1, aligning the connecting ring 14 with the connecting groove 15 and the slider 16 with the sliding groove. Move the pump cover 2 so that the connecting ring 14 slides into the connecting groove 15 and the slider 16 slides into the sliding groove. When the pump cover 2 contacts the pump body 1, the sealing ring on the pump cover 2 seals the connection between the pump cover 2 and the pump body 1. Then, tighten the mounting bolt 17. After the mounting bolt 17 penetrates the pump cover 2 and rotates into the arc-shaped outer wall of the connecting ring 14, the pump cover 2 is fixed. Repeat the above operation in reverse to remove the pump cover 2 from the pump body 1. Then, bring the connecting pipe 7 and the extension pipe 8 close to the outlet... Air pipe 6 is aligned with connecting pipe 7. Then, connecting pipe 7 is rotated through the threaded groove to the outer surface of air pipe 6, so that connecting pipe 7 is connected to air pipe 6. Next, sound-absorbing cotton sleeve 12 is put on the outer surface of extension pipe 8. When sound-absorbing cotton sleeve 12 contacts the side wall of positioning ring 11, threaded sleeve 13 is screwed onto extension pipe 8 to press and fix sound-absorbing cotton sleeve 12. Then, extension pipe 8 is pulled so that extension pipe 8 slides on the outer surface of connecting pipe 7 and limiting block 9 slides inside limiting groove. When limiting block 9 slides to the end of limiting groove, rubber retaining ring 10 is inserted into the groove to limit the position of extension pipe 8, thus completing the assembly of permanent magnet synchronous water pump.

[0036] After the permanent magnet synchronous water pump is assembled, when the permanent magnet synchronous water pump is used, the impeller 20 rotates inside the pump cover 2, so that water enters the pump cover 2 through the inlet pipe 3 and then exits the pump cover through the outlet pipe 4, thereby performing drainage work. When the permanent magnet synchronous water pump is running, the air inside the pump body 1 is discharged outward through the air outlet pipe 6. The air enters the interior of the connecting pipe 7 through the air outlet pipe 6, and then enters the interior of the extension pipe 8 through the connecting pipe 7. After the air enters the interior of the extension pipe 8, the speed of the air decreases due to the large internal diameter of the extension pipe 8, thereby reducing the noise generated by the exhaust. At the same time, the noise is further reduced by the sound-absorbing cotton sleeve 12 on the outside of the extension pipe 8.

[0037] When the impeller needs to be replaced, first remove the pump casing 2 from the pump body 1. Then, tighten the fixing bolt 23 so that it extends away from the fixing plate 22. After the fixing bolt 23 separates from the rotating shaft 18, the restriction on the fixing plate 22 is released, thereby contacting the fixing of the mounting sleeve 19. Then, pull the mounting sleeve 19 and the blade 20 so that the mounting sleeve 19 slides on the outer surface of the rotating shaft 18 and the positioning block 21 slides inside the positioning groove. After the mounting sleeve 19 is detached from the rotating shaft 18, the impeller is disassembled. Then, take out the new impeller and reverse the above operation to install the impeller onto the rotating shaft 18. Finally, reinstall the pump cover 2 onto the pump body 1 to complete the impeller replacement.

[0038] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A permanent magnet synchronous water pump for reducing exhaust noise, comprising a pump body (1) and a pump cover (2), characterized in that: The pump cover (2) is located at one end of the pump body (1). The outer surface of the pump cover (2) is connected to the inlet pipe (3) and the outlet pipe (4). The outer surface of the pump body (1) is fixedly installed with the mounting base (5). The end of the pump body (1) away from the pump cover (2) is connected to the air outlet pipe (6). The outer surface of the air outlet pipe (6) is fitted with a connecting pipe (7). The outer surface of the connecting pipe (7) is fitted with an extension pipe (8). The inner wall of the extension pipe (8) near the connecting pipe (7) is fixedly installed with a limit block (9). The outer surface of one end of the extension pipe (8) is fixedly installed with a positioning ring (11). The outer surface of the extension pipe (8) is fitted with a sound-absorbing cotton sleeve (12). The outer surface of the other end of the extension pipe (8) is threadedly connected with a threaded sleeve (13). The end of the pump body (1) near the pump cover (2) is provided with an installation component.

2. The permanent magnet synchronous water pump for reducing exhaust noise according to claim 1, characterized in that: The outer surface of the vent pipe (6) and the inner wall of the connecting pipe (7) are respectively provided with meshing threaded grooves, and the connecting pipe (7) is threadedly connected to the outer surface of the vent pipe (6) through the threaded grooves.

3. A permanent magnet synchronous water pump for reducing exhaust noise according to claim 1, characterized in that: The outer surface of the connecting pipe (7) is provided with a limiting groove that is slidably connected to the limiting block (9). Several retaining rings (10) are fixedly installed on the outer surface of the connecting pipe (7). The inner wall of the extension pipe (8) is provided with a retaining groove that is the same number as and matches the retaining rings (10). The retaining rings (10) are made of rubber.

4. A permanent magnet synchronous water pump for reducing exhaust noise according to claim 1, characterized in that: A connecting ring (14) is fixedly installed on one end of the pump body (1) near the pump cover (2). A connecting groove (15) is opened on the inner wall of the pump cover (2). A slider (16) is fixedly installed on the inner wall of the connecting groove (15). An installation bolt (17) is threadedly connected to the outer surface of the pump cover (2). A sealing ring that is in contact with the pump body (1) is fixedly installed on one end of the pump cover (2) near the pump body (1).

5. A permanent magnet synchronous water pump for reducing exhaust noise according to claim 4, characterized in that: The connecting ring (14) is slidably connected to the inner wall of the connecting groove (15). The outer surface of the connecting ring (14) is provided with a sliding groove that is compatible with the slider (16). The mounting bolt (17) penetrates the outer surface of the pump cover (2) and extends into the interior of the pump cover (2). The mounting bolt (17) is inserted into the arc-shaped outer wall of the connecting ring (14).

6. A permanent magnet synchronous water pump for reducing exhaust noise according to claim 1, characterized in that: The mounting assembly includes a rotating shaft (18) and a mounting sleeve (19). The rotating shaft (18) is rotatably connected to one end of the pump body (1) near the pump cover (2). The mounting sleeve (19) is fitted on the outer surface of the rotating shaft (18) away from the pump body (1). Several blades (20) are fixedly installed on the outer surface of the mounting sleeve (19). A positioning block (21) is fixedly installed on the outer surface of the rotating shaft (18). A fixing plate (22) is fixedly installed on one end of the mounting sleeve (19) near the rotating shaft (18). A fixing bolt (23) is threadedly connected to the side wall of the fixing plate (22). The blades (20) are located inside the pump cover (2).

7. A permanent magnet synchronous water pump for reducing exhaust noise according to claim 6, characterized in that: The inner wall of the mounting sleeve (19) is provided with a positioning groove that matches the positioning block (21). The fixing bolt (23) passes through the side wall of the fixing plate (22) and is inserted into the outer surface of the rotating shaft (18).

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